11199801680 has 40 divisors (see below), whose sum is σ = 26104550184. Its totient is φ = 4468736000.

The previous prime is 11199801661. The next prime is 11199801713. The reversal of 11199801680 is 8610899111.

11199801680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6042263824 + 5157537856 = 77732^2 + 71816^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142481 + ... + 206640.

Almost surely, 2^11199801680 is an apocalyptic number.

11199801680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11199801680 is an abundant number, since it is smaller than the sum of its proper divisors (14904748504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11199801680 is a wasteful number, since it uses less digits than its factorization.

11199801680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349535 (or 349529 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 44.

The spelling of 11199801680 in words is "eleven billion, one hundred ninety-nine million, eight hundred one thousand, six hundred eighty".